US PATENT SUBCLASS 568 / 806
.~.~.~.~.~ Preparing by pyrolysis (e.g., by cracking, etc.)

Current as of: June, 1999
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568 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {4}
300  DF  .~ OXYGEN CONTAINING (E.G., PERCHLORYLBENZENE, ETC.) {11}
700  DF  .~.~ Hydroxy containing (H of -OH may be replaced by a Group IA or IIA light metal) {10}
715  DF  .~.~.~ Benzene ring containing {8}
716  DF  .~.~.~.~ Phenols (H of -OH may be replaced by a Group IA or IIA light metal) {14}
806.~.~.~.~.~ Preparing by pyrolysis (e.g., by cracking, etc.)

DEFINITION

Classification: 568/806

Preparing by pyrolsis, (e.g., by cracking, etc.):

(under subclass 716) Processes which include preparing the compound by decomposing an aromatic compound by heat.